import java.util.Scanner;

public class Test7 {
    public static void main(String[] args) {
        StringBuilder sb=new StringBuilder();
        sb.append("aaa");
        sb.append("bbb");
        sb.append("ccc");
        String str=sb.toString();
        System.out.println(str);
        sb.append("ddd").append("eee");
        System.out.println(sb);
        Scanner sc=new Scanner(System.in);
        String str1=sc.next();
        StringBuilder sb1=new StringBuilder();
        String s=sb1.append(str1).reverse().toString();
        if(s.equals(str))
        {
            System.out.println("对称");
        }
        else{
            System.out.println("不对称");
        }

    }
}
